Perfective maintenance usually is cost effective _____ a system's operational life.
A) early in
B) during the middle of
C) during the end of
D) throughout

Name: Perfective maintenance usually is cost effective _____ a system's operational life. A) early in B) during the middle of C) during the end of D) throughout
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The Answer of Perfective maintenance usually is cost effective _____ a system's operational life.
A) early in
B) during the middle of
C) during the end of
D) throughout

Perfective Maintenance Usually Is Cost Effective _____ a System's Operational